Review on Ancient Tunnel Ruins Fish Tank Decoration: Aesthetic Ornament for Large Aquariums - Ideal for Pet Products and Monster Fish by Grace Brown

It had sharps and points inside and out which I was afraid would hurt fish or snails. I just sanded down these stains with my dremel and then soaked it in water for a while before putting it in the aquarium. My snails use it sometimes, but my fish don't use it that often. Although I like the way it looks. He's a good size. I'm not disappointed. I don't know if my pets feel the same way.